#1B1863#1B1863

#1B1863 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.3% C 0.127 H 275.8°. Best body text is #FFFFFF at 15.47:1 contrast (WCAG AA passes).

Color values

HEX	#1B1863
RGB	rgb(27, 24, 99)
HSL	hsl(242, 61%, 24%)
HSV	hsv(242, 76%, 39%)
CMYK	cmyk(72.7%, 75.8%, 0%, 61.2%)
CIE-LAB	lab(14.33, 27.82, -43.57)
CIE-LCH	lch(14.33, 51.69, 302.56°)
OKLab	oklab(27.33% 0.0127 -0.1259)
OKLCH	oklch(27.33% 0.127 275.8)
XYZ	xyz(3.0300, 1.7869, 11.9872)
Luminance	0.0179 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B1863 #606318

analogous

#183B63 #1B1863 #411863

triadic

#1B1863 #631B18 #18631B

tetradic

#1B1863 #63183B #606318 #186341

square

#1B1863 #63183B #606318 #186341

split-complementary

#1B1863 #634118 #3B6318

monochromatic

#070619 #0E0C32 #1B1863 #282494 #3630C6

Accessibility & contrast

On white

15.47

#1B1863 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1B1863 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B1863

15.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B1863	#FFFFFF	#000000	##FFFFFF
##1B1863	1.00	15.47	1.36	15.47
#FFFFFF	15.47	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002865

Deuteranopia (green-blind)

#002162

Tritanopia (blue-blind)

#002D3B

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1b1863;
/* rgb */ color: rgb(27, 24, 99);
/* oklch */ color: oklch(27.3% 0.127 275.8);

Tailwind

colors: {
  custom: {
    50: '#635690',
    500: '#1b1863',
    950: '#000000',
  },
}

SCSS

$custom: #1b1863;
$custom-light: #635690;
$custom-dark: #000000;

JSON

{
  "hex": "#1b1863",
  "rgb": {
    "r": 27,
    "g": 24,
    "b": 99
  },
  "hsl": {
    "h": 242.4,
    "s": 60.976,
    "l": 24.118
  },
  "oklch": {
    "l": 0.27325,
    "c": 0.12653,
    "h": 275.8
  },
  "luminance": 0.01787
}

Semantic roles & 50–950 ramp

primary

#1B1863

secondary

#96993E

accent

#E444DE

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030D

muted

#7A787D

Preview Lab

Preview with #1B1863

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →